两种独行菜种子萌发生理特性研究  

Physiological Characteristic of Seed Germination of Two Species of Lepidium L.

作　　者：孟君[1] 李群[1] 李冠[1] 

机构地区：[1]新疆大学生命科学与技术学院,新疆乌鲁木齐830046

出　　处：《生物技术》2008年第2期32-35,共4页Biotechnology

摘　　要：以两种在新疆具有代表性的十字花科独行菜属早春短命植物抱茎独行菜(Lepidium perfoliatum Linnaeus)和独行菜(Lepi-dium apetalum Willd)为材料,研究(光照、温度、外源激素ABA处理)对其种子萌发的影响。结果:两种独行菜种子萌发对光照不敏感;抱茎独行菜种子萌发的温度范围广,在0℃～25℃之间都可萌发,而独行菜种子则在低温下(0℃、4℃)不萌发,其萌发温度范围为10℃～25℃。两种独行菜种子对低温胁迫表现出不同的耐受性;0℃、4℃下,在培养基中加入不同浓度的ABA,对抱茎独行菜种子萌发有抑制作用。Lepidium perfoliatum Linnaeus and Lepidium apetalum Willd are two typical ephemeral plants in Xinjiang.We discussed the effect of different environment on seed germination of the two Lepidiums.The results showed that the seed germination of the two Lepidiums were insensitive by light;The germination temperature range of Lepidium perfoliatum Linnaeus was wider than Lepidium apetalum Willd.Its germination percentages could be 40% even under 0℃.But Lepidium apetalum Willd couldn＇t germinate under low temperature of 0℃ and 4℃.This phenomenon could show that they have different tolerance to low temperature stress.The exogenous abscisic acid restrained the germination of Lepidium perfoliatum Linnaeus.

关 键 词：抱茎独行菜 独行菜 种子萌发 

分 类 号：Q945[生物学—植物学]